Showerhead



FIG. 1 is a bottom plan view of a showerhead showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the other sides being the same as the side shown; and

FIG. 4 is a perspective view taken from the bottom and one side thereof. 

The ornamental design for a showerhead, as shown and described. 